27 citations · 120 across the 10 of their papers we have counts for
24 papers
The phase-diagram of the Blume-Capel-Haldane-Ising spin chain
Christian Boudreault, S. A. Owerre, M. B. Paranjape
We consider the one-dimensional spin chain for arbitrary spin on a periodic chain with sites, the generalization of the chain that was studied by Blume and Capel \cite{bc}:…
Negative mass bubbles in de Sitter space-time
Saoussen Mbarek, M. B. Paranjape
We study the possibility of the existence of negative mass bubbles within a de Sitter space-time background with matter content corresponding to a perfect fluid. It is shown that t…
Haldane-like antiferromagnetic spin chain in the large anisotropy limit
S. A. Owerre, M. B. Paranjape
We consider the one dimensional, periodic spin chain with sites, similar to the one studied by Haldane \cite{hal}, however in the opposite limit of very large anisotropy and sm…
Quantum-classical transition of the escape rate of a biaxial ferromagnetic spin with an external magnetic field
S. A. Owerre, M. B. Paranjape
We study the model of a biaxial single ferromagnetic spin Hamiltonian with an external magnetic field applied along the medium axis. The phase transition of the escape rate is inve…
The Battle of the Bulge: Decay of the Thin, False Cosmic String
Bum-Hoon Lee, Wonwoo Lee, Richard MacKenzie +3
We consider the decay of cosmic strings that are trapped in the false vacuum in a theory of scalar electrodynamics in 3+1 dimensions. We restrict our analysis to the case of thin-w…
Tunneling decay of false vortices
Bum-Hoon Lee, Wonwoo Lee, Richard MacKenzie +3
We consider the decay of vortices trapped in the false vacuum of a theory of scalar electrodynamics in 2+1 dimensions. The potential is inspired by models with intermediate symmetr…